We should take effective measures to the infectious disease.
| A．work out | B．stamp out | C．turn out | D．carry out |
. ________ when she started complaining.
| A．Not until arrived he | B．No sooner had he arrived |
| C．Hardly did he arrive | D．Scarcely had he arrived |
. An awful accident ________, however, occur on the express the other day.
| A．does | B．did | C．has | D．had |
. Was it ________ your son won the first prize last month that please you?
| A．who | B．that | C．what | D．which |
强调、倒装与省略（句）
. It was ________ he studied that he managed to receive a doctor’s degree.
| A．that | B．because | C．on account of | D．due to |
.Growing around the river ________ wild flowers of almost the same colour.
| A．is | B．was | C．are | D．has been |